Soil. 

 - xiii, 784 pages :  illustrations, maps ;  24 cm 
 - Its Yearbook of agriculture,  1957 .
<br/><br/> Limited to the management of soil. 
<br/><br/><label>LCCN: </label>agr57000244  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soils<br/>Soil conservation--United States<br/>Soils--United States
<br/><br/><label>LC Class. No.: </label>S591  / .U55 1957 
<br/><br/><label>National Agricultural Library Call No.: </label>1Ag 84y 1957